Change room span op name to db.sql.room

[romtsn]

📜 Description

Change span op for room spans, so they don't contribute to starfish by default

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code
• I added tests to verify the changes
• I updated the docs if needed
• No breaking changes

🔮 Next steps